Effective life indicator and stopper including the same

ABSTRACT

Provided is an effective life indicator and a stopper including the same, and more particularly, to an effective life indicator and a stopper including the same that are capable of allowing a consumer to easily check a drinkable or usable period after opening a beverage or medicine accommodated in a container by maintaining a state in which a development material receiving section is ruptured by a pressure applied to the container when the stopper is coupled to the container and starting an operation as a development material is leaked to the outside to come in contact with a development medium member when the stopper is initially separated from the container.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to and the benefit of Korean PatentApplication No. 10-2013-0048100, filed on Apr. 30, 2013, the disclosureof which is incorporated herein by reference in its entirety.

BACKGROUND

1. Field of the Invention

The present invention relates to an effective life indicator and astopper including the same, and more particularly, to an effective lifeindicator and a stopper including the same that are capable of allowinga consumer to easily check a drinkable or usable period after opening abeverage or medicine accommodated in a container by maintaining a statein which a development material receiving section is ruptured by apressure applied to the container when the stopper is coupled to thecontainer and starting an operation as a development material is leakedto the outside to come in contact with a development medium member whenthe stopper is initially separated from the container.

2. Discussion of Related Art

In recent times, as a refrigeration and freezing industry is advanced,foods and medicines that require freezing and refrigeration should beappropriately managed, and in particular, the foods or medicines thatrequire a strict temperature management during distribution should bealways maintained in a fresh state during the entire distributionprocess from producers to consumers.

When such foods or medicines are exposed to a non-regulated temperaturefor a certain time or more, since an ingredient or contents thereof maybe spoiled to cause a serious side effect of a user, it is veryimportant for a consumer to check a distribution process of the foodsand medicines with the naked eye.

Accordingly, a plurality of methods and apparatuses for allowing aconsumer to determine whether the foods or medicines are distributedunder the regulated temperature management are disclosed, a temperatureand time indicator (such as time temperature indicator, TTI) (aninstrument or a label attached to each of the corresponding products andconfigured to display accumulated temperature and time records in theproducts) is used by an international major company such as 3M or thelike, and various kinds of TTIs are developed and used.

Meanwhile, as described above, most of the temperature and timeindicators developed and used until now have a function of allowing aconsumer to determine only whether the foods or medicines aredistributed at an appropriate refrigeration or freezing temperatureduring the distribution process.

That is, the temperature and time indicators can only function to allowa user to confirm whether the foods or medicines are distributed in anappropriate temperature range during the process until arrival at theuser, but cannot check (i) whether the foods or medicines are stored atan appropriate temperature, or (ii) whether the drinkable or usable timeperiods of the foods and medicines are expired after the user purchasesand opens the foods or medicines.

Moreover, (iii) an expiration date applied to the foods or medicinesmerely shows a period in which the foods or medicines can be distributedafter manufacture, but cannot propose a guide how long the foods ormedicines could be used or drunk.

Accordingly, in order to solve the functional problems of theconventional temperature and time indicator, the inventor(s) hasinvented an effective life indicator attached to a stopper andconfigured to start an operation when the stopper is initially separatedfrom a container and capable of allowing a consumer to easily check adrinkable or usable time period after opening beverages or medicinescontained in the container, and the stopper including the same.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned problems, the present invention isdirected to provide an effective life indicator and a stopper includingthe same that are capable of allowing a consumer to easily check adrinkable or usable period after opening a beverage or medicineaccommodated in a container by rupturing a development materialreceiving section by a pressure applied to the container when thestopper is coupled to the container and starting an operation as adevelopment material is leaked to the outside to come in contact with adevelopment medium member when the stopper is initially opened.

In order to accomplish the above-mentioned aspect, the present inventionis directed to an effective life indicator including: a developmentmaterial receiving section configured to accommodate a developmentmaterial; a development medium member configured to absorb and diffusethe development material; a rupture member configured to leak thedevelopment material to the outside when the rupture member ruptures thedevelopment material receiving section and is separated therefrom; and ahousing configured to accommodate the development material receivingsection, the development medium member, and the rupture member thereinand attached to an inner side of a stopper of a container, wherein therupture member ruptures the development material receiving section usinga pressure applied by the container when the stopper is coupled to thecontainer, and the development material is leaked to the outside andcomes in contact with the development medium member to start anoperation thereof when the stopper is initially separated from thecontainer.

Preferably, the development material receiving section may furtherinclude one or more rupture sections formed of a relatively thinmaterial and formed at a lower section thereof, and the rupture membermay further include a conical projection at a position corresponding tothe one more rupture section.

Here, a washer-shaped rubber member may be provided between thedevelopment material receiving section and the rupture member, and thedevelopment material may be prevented from being leaked from thedevelopment material receiving section in a state in which the stopperis coupled to the container.

Preferably, the development material receiving section may be formed ofan elastic material, and the rupture member may further include aconical projection.

Here, a thorny section extending upward may be provided over theprojection, and the thorny section may prevent a leakage of thedevelopment material from the development material receiving section ina state in which a portion of the development material receiving sectionis ruptured and the stopper is coupled to the container.

Preferably, the development medium member may be formed of amicro-porous film, and a blocking film configured to block movement ofthe development material may be formed under the development mediummember.

Preferably, the housing may be formed of a material such as PET and PEfilm that is able to be easily bent by a pressure.

Preferably, the effective life indicator may further include a diffusionmember configured to absorb and diffuse the development material suchthat the development material leaked from the development materialreceiving section is able to come in contact with the development mediummember.

Preferably, the diffusion member may be formed to surround upper andlower portions of the development material receiving section.

In addition, in order accomplish the above-mentioned aspect, a stopperof a container according to the present invention includes an effectivelife indicator, and the effective life indicator includes: a developmentmaterial receiving section configured to accommodate a developmentmaterial; a development medium member configured to absorb and diffusethe development material; a rupture member configured to leak thedevelopment material to the outside when the rupture member ruptures thedevelopment material receiving section and is separated therefrom; and ahousing configured to accommodate the development material receivingsection, the development medium member, and the rupture member thereinand attached to an inner side of the stopper of the container, whereinthe rupture member ruptures the development material receiving sectionusing a pressure applied by the container when the stopper is coupled tothe container, and the development material is leaked to the outside andcomes in contact with the development medium member to start anoperation thereof when the stopper is initially separated from thecontainer, and the stopper comprises one or more display unitsconfigured to allow recognition of one or more of starting andtermination of an operation of the effective life indicator.

Here, the one or more display units may include an operation startingsection disposed at a position corresponding to a position at which thedevelopment material initially comes in contact with the developmentmedium member such that the starting of the operation of the effectivelife indicator is able to be recognized.

Here, the one or more display units may include an operation terminationsection disposed at a position corresponding to a position at which thedevelopment material finally comes in contact with the developmentmedium member such that expiration of a drinkable time period ofcontents accommodated in the container is able to be recognized.

Preferably, the one or more display units may be a display window typein which a print having a certain shape is attached or printed on thestopper when the stopper has a display hole or the stopper itself has atransparent material.

According to the present invention, as the effective life indicator isattached to the stopper through press-fitting, the effective lifeindicator can be attached to the product and used without a separateadditional process.

In addition, according to the present invention, as the effective lifeindicator is configured to start the operation thereof when the stopperis initially opened after the stopper is coupled to the container filledwith the contents, the operation of the effective life indicator can bestarted without an additional process. Accordingly, the consumer canmore easily recognize the drinkable or usable time period after openingof the beverage or medicines accommodated in the container.

Moreover, cost reduction and improvement of productivity can be obtaineddue to removal of an additional process.

In addition, according to the present invention, when the content-filledcontainer is sealed and then initially opened, the effective lifeindicator automatically starts the operation thereof without separatemanipulation, and thus, reliability of the effective life indicator forthe consumer can be improved.

Additionally, according to the present invention, the stopper includingthe above-mentioned effective life indicator therein includes the one ormore display units configured to recognize any one or more of theoperation starting and termination of the effective life of theeffective life indicator. Accordingly, the consumer can more easilycheck whether the product is drinkable and/or usable after opening, anddrinking and/or use of the product having the expired effective life canbe excluded.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features, and advantages of the presentinvention will become more apparent to those of ordinary skill in theart by describing in detail exemplary embodiments thereof with referenceto the accompanying drawings, in which:

FIG. 1 is an exploded perspective view of an effective life indicator100 and a stopper including the same according to an embodiment of thepresent invention;

FIG. 2 is a cross-sectional view schematically showing the effectivelife indicator 100 according to the embodiment of the present invention;

FIG. 3 is a view schematically showing a state in which the effectivelife indicator 100 according to the embodiment of the present inventionis attached into the stopper;

FIG. 4 is a view specifically showing operation states of the effectivelife indicator 100 according to the embodiment of the present invention,FIG. 4( a) is a view showing a state before the stopper to which theeffective life indicator 100 is attached is coupled to a container, FIG.4( b) is a view showing a state in which the stopper to which theeffective life indicator 100 is attached is coupled to the container,and FIG. 4( c) is a view showing a state in which the stopper to whichthe effective life indicator 100 is attached is initially separated fromthe container;

FIG. 5 is a plan view showing states according to steps of the stopperto which the effective life indicator 100 according to the embodiment ofthe present invention is attached, FIG. 5( a) is a view showing a statebefore and after the stopper is coupled to the container, FIG. 5( b) isa view showing a state in which the stopper is initially separated fromthe container, and FIG. 5( c) is a view showing a state after a preseteffective life is expired; and

FIG. 6 is an exploded perspective view according to an effective lifeindicator 100′ and a stopper including the same according to anotherembodiment of the present invention.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

Exemplary embodiments of the present invention will be described indetail below with reference to the accompanying drawings. While thepresent invention is shown and described in connection with exemplaryembodiments thereof, it will be apparent to those skilled in the artthat various modifications can be made without departing from the spiritand scope of the invention.

An exemplary embodiment of an effective life indicator and a stopperincluding the same according to the present invention will be describedwith reference to the accompanying drawings. In this regard, thicknessesof lines or sizes of components shown in the drawings may be exaggeratedfor the purpose of clarity and convenience of description. In addition,terms to be described are terms defined in consideration of functions inthe present invention and may differ according to intensions of a useror an operator or customs. Accordingly, definitions of these termsshould be described based on contents throughout the specification.

First Embodiment

FIG. 1 is an exploded perspective view of an effective life indicator100 and a stopper including the same according to an embodiment of thepresent invention, FIG. 2 is a cross-sectional view schematicallyshowing the effective life indicator 100 according to the embodiment ofthe present invention, and FIG. 3 is a view schematically showing astate in which the effective life indicator 100 according to theembodiment of the present invention is attached into the stopper.

The effective life indicator 100 according to the embodiment of thepresent invention will be described in detail with reference to FIGS. 1to 3.

The effective life indicator 100 according to the embodiment of thepresent invention is attached into a stopper 10 of a container 20, andmay include a development material receiving section 110, a developmentmedium member 120, a rupture member 130, a housing 140, and a diffusionmember 150.

The development material receiving section 110 functions to accommodatea development material 112 therein, and the development material 112 ismelted and diffused onto the development medium member 120 (to bedescribed below) when the development material 112 reaches at a certaintemperature or departs from a certain temperature range, such that thedevelopment medium member 120 becomes transparent.

Here, the kind of the development material 112 is not limited as long asthe development material 112 is melted and diffused onto the developmentmedium member 120 according to the temperature. For example, fatty acidester, paraffin, or the like, may be used as the development material,and other different kinds of development materials may be variously usedaccording to the kind or characteristics of contents in the container20.

Meanwhile, one or more rupture sections 111 formed of a relatively thinmaterial may be formed at a lower section of the development materialreceiving section 110. Here, the one or more rupture sections 111 may beformed of a thin foil. The rupture section 111 may be ruptured by therupture member 130 (to be described below), and a function of therupture section 111 will be described below.

The development medium member 120 functions to absorb and diffuse thedevelopment material 112, and is disposed over the development materialreceiving section 110.

The development medium member 120 may be formed of a micro-porous filmhaving a property that becomes transparent when it contains thedevelopment material 112, and a commercially available synthetic resinmicro-porous film or the like formed of a PP or PE material may be usedas the development medium member 120.

A blocking film 121 may be further provided under the development mediummember 120.

The blocking film 121 functions to block movement of the developmentmaterial 112 when the effective life indicator 100 starts an operationthereof.

A circular plate may be exemplarily used as the blocking film 121 of thepresent invention, and the blocking film 121 may have a red color or acertain color. In addition, the blocking film 121 may be formed of asynthetic resin film or a UV printed film to be disposed under thedevelopment medium member 120, thereby blocking movement of thedevelopment material 112.

The rupture member 130 functions to cause a leakage of the developmentmaterial 112 accommodated in the development material receiving section110 to the outside when the rupture member 130 ruptures a portion of thedevelopment material receiving section 110 and is separated from thedevelopment material receiving section 110.

Specifically, the rupture member 130 includes a projection 131 formed ata position corresponding to the one or more rupture sections 111, andthe one or more rupture sections 111 are ruptured using the projection131. Here, while the projection 131 may be formed in various shapes, aconical shape may be preferable.

The rupture member 130 ruptures the development material receivingsection 110 using a pressure applied from the container 20 when thestopper 10 is coupled to the container 20. Here, since insertion of theprojection 131 into the rupture section 111 is maintained when thecontainer 20 is coupled to the stopper 10, the development material 112is not leaked to the outside of the development material receivingsection 110. However, when the stopper 10 is initially separated fromthe container 20 (i.e., when a user purchases and opens the product towhich the effective life indicator 100 is attached), the projection 131is separated from the rupture section 111, and thus, the developmentmaterial 112 is leaked to the outside of the development materialreceiving section 110.

Then, the development material 112 leaked from the development materialreceiving section 110 is diffused through the diffusion member 150 (tobe described below) to come in contact with the development mediummember 120, and thus, the effective life indicator 100 starts anoperation thereof. This will be described below.

Meanwhile, a washer-shaped rubber member 132 may be further providedbetween the development material receiving section 110 and the rupturemember 130. The rubber member 132 functions to prevent a leakage of thedevelopment material 112 from the development material receiving section110 and the development material 112 from coming in contact with thediffusion member 150.

That is, when the state in which the container 20 is coupled to thestopper 10 is maintained, as the state in which the projection 131 isinserted into the rupture section 111 is maintained, the developmentmaterial 112 is not leaked to the outside of the development materialreceiving section 110. However, in order to more effectively prevent theleakage, the rubber member 132 is provided to prevent the leakage to theoutside of the development material receiving section 110.

The housing 140 functions to accommodate the development materialreceiving section 110, the development medium member 120, the rupturemember 130, and the diffusion member 150 (to be described below)therein, and is attached to an inner side of the stopper 10 of thecontainer 20.

Here, the housing 140 may be constituted by an upper housing 140 a and alower housing 140 b, and the upper housing 140 a and the lower housing140 b may be configured to be blocked from the outside through a radiofrequency welding or thermosetting process.

The upper housing 140 a and the lower housing 140 b may have a circularplate shape, may function as upper and lower cases of the effective lifeindicator 100, and may be formed of a material, the inside of which canbe seen from the outside, such as a transparent vinyl coated film. Morepreferably, a material that can be easily bent by a pressure, forexample, a transparent PET, PVC, PE film, or the like, may be used.

The diffusion member 150 functions to absorb and diffuse the developmentmaterial 112 such that the development material 112 leaked to a lowerside of the development material receiving section 110 comes in contactwith the development medium member 120 disposed over the developmentmaterial receiving section 110.

For this, the diffusion member 150 may have a cylindrical structurehaving upper and lower partially closed sides to partially surroundupper and lower sides of the development material receiving section 110.In addition, a material such as non-woven fabric may be applied to thediffusion member 150 to absorb and diffuse the development material 112.

The configuration of the diffusion member 150 disclosed in thespecification is an embodiment, and various configurations and materialsmay be applied as long as the development material 112 leaked from thedevelopment material receiving section 110 can come in contact with thedevelopment medium member 120.

In addition, the present invention relates to the stopper 10 of thecontainer 20 including the effective life indicator 100. Referring toFIGS. 1 and 3, the stopper 10 of the container 20 includes theabove-mentioned effective life indicator 100 disposed therein.

The effective life indicator 100 may include the development materialreceiving section 110, the development medium member 120, the rupturemember 130, the housing 140, and the diffusion member 150. Meanwhile,since such components are described above in detail, description thereofwill be omitted.

Here, while the effective life indicator 100 is described as beingpress-fitted into the stopper 10, an attachment method is not limited aslong as the indicator is securely fixed to the inner side of the stopper10 or may be integrally formed with the stopper 10.

The stopper 10 includes at least one or more display units such that anyone of the starting and termination of the operation of the effectivelife indicator 100 (i.e., a state in which the product arrives at theeffective life, which is drinkable and usable, after opening theproduct) can be recognized.

The display unit may be classified into an operation starting section 11and an operation termination section 12.

The operation starting section 11 helps a consumer to easily recognizethe starting of the operation of the effective life indicator 100 (i.e.,the fact that the stopper 10 is already separated from the container 20once) and is formed at a position corresponding to the position at whichthe development material first comes in contact with the developmentmedium member 120. Referring to FIG. 1, it will be appreciated that theoperation starting sections 11 are formed at a periphery of the stopper10 at constant intervals.

The operation termination section 12 helps the consumer to easily checkwhether the usable or drinkable time period of the contents in thecontainer is expired, and is formed at a position corresponding to theposition at which the development material finally comes in contact withthe development medium member 120. Referring to FIG. 1, it will beappreciated that the operation termination section 12 is formed at abouta center of the stopper 10.

In FIG. 1, while shapes of the operation starting section 11 and theoperation termination section 12 are shown as having a constant hole oraperture formed in the stopper 10 itself, the shapes of the operationstarting section 11 and the operation termination section 12 are notlimited thereto. For example, when the stopper 10 itself has atransparent material, a print having a certain shape may be attached orprinted on the stopper 10 to form the operation starting section 11 andthe operation termination section 12 in a display window type.

An operating principle and a state of the stopper 10 including theeffective life indicator 100 according to the above-mentionedconfiguration will be described in detail with reference to FIGS. 4 and5.

FIG. 4 is a view specifically showing an operating state of theeffective life indicator 100 according to the embodiment of the presentinvention, and FIG. 5 is a plan view showing states according to stepsof the stopper to which the effective life indicator 100 according tothe embodiment of the present invention is attached.

FIG. 4( a) shows a state before the stopper 10 to which the effectivelife indicator 100 is attached is coupled to the container 20.

Before the stopper 10 is coupled to the container 20, as describedabove, the effective life indicator 100 is press-fitted into a lowerside of the stopper 10, and the stopper 10 is coupled along a screwgroove of the container 20.

Here, no variation in color is detected through the operation startingsection 11 and the operation termination section 12 of the stopper 10(see FIG. 5( a)).

FIG. 4( b) shows a state in which the stopper 10 to which the effectivelife indicator 100 is attached is coupled to the container 20.

Specifically, when the stopper 10 is coupled to the container 20, alower portion of the effective life indicator 100 is pressed by thepressure applied from the container 20. Accordingly, the projection 131of the rupture member 130 ruptures the rupture section 111 of thedevelopment material receiving section 110. Here, since the state inwhich the container 20 is coupled to the stopper 10 is maintained, thestate in which the projection 131 is inserted into the rupture section111 is maintained, and since the rubber member 132 is disposed in place,the development material 112 does not leak to the outside thedevelopment material receiving section 110.

Here, since the effective life indicator 100 still does not start theoperation thereof, no variation in color is detected through theoperation starting section 11 and the operation termination section 12of the stopper 10 (see FIG. 5( a)).

FIG. 4( c) shows a state in which the stopper 10 to which the effectivelife indicator 100 is attached is initially separated from the container20 (i.e., when a user purchases and initially opens the product to whichthe effective life indicator 100 is attached).

When the stopper 10 is initially separated from the container 20, theprojection 131 is separated from the rupture section 111, and thus, thedevelopment material 112 is leaked to the outside of the developmentmaterial receiving section 110. The leaked development material 112 isdiffused through the diffusion member 150 to come in contact with thedevelopment medium member 120. As described above, the effective lifeindicator 100 starts the operation thereof due to the initial contactbetween the development material 112 and the development medium member120.

Here, a portion of the development medium member 120 in contact with thedevelopment material 112 becomes transparent, and thus, the red color ofthe blocking film 121 can be seen through the operation starting section11 from the outside (see FIG. 5( b)). That is, the user can see the redcolor of the blocking film 121 through the operation starting section 11formed at the stopper 10 to easily recognize that the effective lifeindicator 100 has started the operation thereof.

As a certain time elapses after the stopper 10 is initially separatedfrom the container 20, the development material 112 is graduallydiffused and deployed toward a center of the development medium member120. Here, a diffusion speed of the development material 112 may beadjusted to be set such that the development material 112 arrives at thecenter of the development medium member 120 to correspond to theeffective life after the opening.

According to the above-mentioned configuration, when the effective lifeafter the opening is expired, the red color of the blocking film 121 canbe seen through the operation termination section 12 (see FIG. 5C). Thatis, the user can see the red color of the blocking film 121 through theoperation termination section 12 formed at the stopper 10 so that thedrinkable or usable time period of the product can be easily recognized.

Second Embodiment

FIG. 6 is an exploded perspective view of an effective life indicator100′ and a stopper including the same according to another embodiment ofthe present invention.

Since the effective life indicator 100′ shown in FIG. 6 includes thesame components as the effective life indicator 100 shown in FIGS. 1 to5 except that a development material receiving section 110′ is formed ofan elastic material and a thorny section 133′ is further provided on aprojection 131′ instead of one or more of the rupture section 111 andthe rubber member 132 of the development material receiving section 110,description of the same components will be omitted.

The development material receiving section 110′ may be formed of anelastic material, and a development material 112′ is accommodatedtherein to a certain height (i.e., the development material is not fullyfilled therein). Here, the development material receiving section 110′may be formed of a material having elasticity and that can be partiallyruptured when a certain pressure or more is applied, for example, avinyl tube, a thin rubber tube, or the like.

A rupture member 130′ functions to leak the development material 112′accommodated in the development material receiving section 110′ to theoutside when the development material receiving section 110′ is rupturedand separated.

Specifically, the rupture member 130′ may include a conical projection131′ and the thorny section 133′ extending upward from the projection131′.

According to the above-mentioned configuration, the projection 131′ andthe thorny section 133′ of the rupture member 130′ rupture thedevelopment material receiving section 110′ to form a hole having acertain size using the pressure applied from the container 20 when thestopper 10 is coupled to the container 20.

Here, when the state in which the container 20 is coupled to the stopper10 is maintained, a hole formed by the projection 131′ and the thornysection 133′ is disposed at a position higher than the height at whichthe development material 112′ is accommodated so that the developmentmaterial 112′ is not leaked to the outside of the development materialreceiving section 110′.

However, when the stopper 10 is initially separated from the container20 (i.e., when a user purchases and opens the product to which theeffective life indicator 100′ is attached), the projection 131′ and thethorny section 133′ are separated from the development materialreceiving section 110′, and thus, the development material 112′ isleaked to the outside of the development material receiving section110′.

Then, as described above, the development material 112′ leaked from thedevelopment material receiving section 110′ is diffused through thediffusion member 150 to come in contact with the development mediummember 120, and thus, the effective life indicator 100′ starts anoperation thereof.

Here, in FIG. 6, while the projection 131′ and the thorny section 133′are shown as having a conical shape and a sharply protruding shape,various modifications may be applied.

It will be apparent to those skilled in the art that variousmodifications can be made to the above-described exemplary embodimentsof the present invention without departing from the spirit or scope ofthe invention. Thus, it is intended that the present invention coversall such modifications provided they come within the scope of theappended claims and their equivalents.

1. An effective life indicator configured to display a drinkable orusable time period after opening, the effective life indicatorcomprising: a development material receiving section configured toaccommodate a development material; a development medium memberconfigured to absorb and diffuse the development material; a rupturemember configured to leak the development material to the outside whenthe rupture member ruptures the development material receiving sectionand is separated therefrom; and a housing configured to accommodate thedevelopment material receiving section, the development medium member,and the rupture member therein and attached to an inner side of astopper of a container, wherein the rupture member ruptures thedevelopment material receiving section using a pressure applied by thecontainer when the stopper is coupled to the container, and thedevelopment material is leaked to the outside and comes in contact withthe development medium member to start an operation thereof when thestopper is initially separated from the container.
 2. The effective lifeindicator according to claim 1, wherein the development materialreceiving section further comprises one or more rupture sections formedof a relatively thin material and formed at a lower section thereof, andthe rupture member further comprises a conical projection at a positioncorresponding to the one more rupture section.
 3. The effective lifeindicator according to claim 2, wherein a washer-shaped rubber member isprovided between the development material receiving section and therupture member, and the development material is prevented from beingleaked from the development material receiving section in a state inwhich the stopper is coupled to the container.
 4. The effective lifeindicator according to claim 1, wherein the development materialreceiving section is formed of an elastic material, and the rupturemember further comprises a conical projection.
 5. The effective lifeindicator according to claim 4, wherein a thorny section extendingupward is provided over the projection, and the thorny section preventsa leakage of the development material from the development materialreceiving section in a state in which a portion of the developmentmaterial receiving section is ruptured and the stopper is coupled to thecontainer.
 6. The effective life indicator according to claim 1, whereinthe development medium member is formed of a micro-porous film, and ablocking film configured to block movement of the development materialis formed under the development medium member.
 7. The effective lifeindicator according to claim 1, wherein the housing is formed of amaterial such as PET and PE film that is able to be easily bent by apressure.
 8. The effective life indicator according to claim 1, whereinthe effective life indicator further comprises a diffusion memberconfigured to absorb and diffuse the development material such that thedevelopment material leaked from the development material receivingsection is able to come in contact with the development medium member.9. The effective life indicator according to claim 8, wherein thediffusion member is formed to surround upper and lower portions of thedevelopment material receiving section.
 10. A stopper of a containercomprising an effective life indicator, the effective life indicatorcomprising: a development material receiving section configured toaccommodate a development material; a development medium memberconfigured to absorb and diffuse the development material; a rupturemember configured to leak the development material to the outside whenthe rupture member ruptures the development material receiving sectionand is separated therefrom; and a housing configured to accommodate thedevelopment material receiving section, the development medium member,and the rupture member therein and attached to an inner side of thestopper of the container, wherein the rupture member ruptures thedevelopment material receiving section using a pressure applied by thecontainer when the stopper is coupled to the container, and thedevelopment material is leaked to the outside and comes in contact withthe development medium member to start an operation thereof when thestopper is initially separated from the container, and the stoppercomprises one or more display units configured to allow recognition ofone or more of starting and termination of an operation of the effectivelife indicator.
 11. The stopper of the container comprising theeffective life indicator according to claim 10, wherein the one or moredisplay units comprise an operation starting section disposed at aposition corresponding to a position at which the development materialinitially comes in contact with the development medium member such thatthe starting of the operation of the effective life indicator is able tobe recognized.
 12. The stopper of the container comprising the effectivelife indicator according to claim 10, wherein the one or more displayunits comprise an operation termination section disposed at a positioncorresponding to a position at which the development material finallycomes in contact with the development medium member such that expirationof a drinkable time period of contents accommodated in the container isable to be recognized.
 13. The stopper of the container comprising theeffective life indicator according to claim 10, wherein the one or moredisplay units are a display window type in which a print having acertain shape is attached or printed on the stopper when the stopper hasa display hole or the stopper itself has a transparent material.
 14. Theeffective life indicator according to claim 3, wherein the developmentmedium member is formed of a micro-porous film, and a blocking filmconfigured to block movement of the development material is formed underthe development medium member.
 15. The effective life indicatoraccording to claim 3, wherein the housing is formed of a material suchas PET and PE film that is able to be easily bent by a pressure.
 16. Theeffective life indicator according to claim 3, wherein the effectivelife indicator further comprises a diffusion member configured to absorband diffuse the development material such that the development materialleaked from the development material receiving section is able to comein contact with the development medium member.